I have system on SuperMicro MoBo with built-in I210 adapters. CPU is E3-1220v3, 4 cores, and igb0 driver creates 4 queues.
FreeBSD version is 11.1-STABLE r324205. Sometimes system becomes very unresponsive and igb0 queues consume 100% of CPU for tens of minutes. System doesn't have any firewall, NAT or other additional network processing. I don't believe, that it is normal behavior, because only possible load on this server at these moments is torrents, which could not be more than 100MBit/s (my connection to Internet). 100% of 4 cores of E3-1220v3 for 50-60Mbit/s? Really? Looks like a bug. -- // Lev Serebryakov
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